Means for adjusting intermediate buckets.



No. 735,054. PATENTED AUG. 4, 1903. O. D. H; BENTLEY.

MEANS FOR ADJUSTING INTERMEDIATE BUOKETS.

uruommx FILED APR. 22, 1903.

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Witnesses:

OHverD.H.BenLle JQLL' No. 735,054. Patented August 4, 190-3.

UNITED STATES PATENT OFFICE.

OLIVER H. BENTLEY, OF SOHENEOTADY, NEW YORK, ASSIGNOR TO GEN- ERALELECTRIC COMPANY, A CORPORATION OF NEW YORK.

MEANS FOR ADJUSTING INTERMEDIATE B'UCKETS.

SPECIFICATION forming part of Letters Patent No. 735,054, dated August4, 1903.

Application filed April 22,1903- Serial No. 153,746. (No model.)

T ZZ wh m i m y conc rn: the outer end of the support 5, that carries Beit known that I, OLIVER D. H. BENTLEY, the intermediate buckets orfluid-discharging a citizen of the United States, residing at means 6.The groove is provided with walls Schenectady, in the county ofSchenectady, located at right angles to each other, and the State of NewYork,haveinventedcertain new support for the intermediates is providedand useful Improvements in Means for Adwith one flat wall which engageswith the justing Intermediate Buckets for Elasticcylindrical face of thegroove and with op- Fluid Turbines, of which the following is a positelydisposed and inclined or beveled specification. faces 7, with which theadjusting-blocks 8 6o 10 Elastic-fluid turbines of the jet type areengage. The adjusting-blocks are arranged provided with intermediatebuckets located in pairs and preferably situated at or near between theadjacent rows of wheel-buckets the ends of the segmental support for theinfor the purpose of properly directing the termediate, althoughadditional blocks can v passage of motive fluid from one wheel to beused if desired. Each of the blocks is 5 I5 the next. Between the rowsof wheels and provided with one fiat surface which engages intermediatebuckets are small clearances with the wall of the groove in the casingand through which more or less steam escapes. with a beveled or inclinedsurface which en- 'lhese clearances are made as small as possigages withthe corresponding surface on the I ble, frequently being as low as two,and at intermediate support. The blocks are re- 70 times as high asfive, hundredths of an inch. tained in place by bolts 9, that areaccessible It sometimes happens that it is necessary to from the outsideof the casing, so that the inadjustthese clearances,either while thewheel termediates, which are located entirely wit bin is stationary orrevolving, and itis preferable the casing, can be adjusted withoutopening to do this without opening the casing or shell the casing. Thisis particularly important 75 5 which incloses the working parts. wherethe turbineis connected toa condenser,

My invention has for its object to provide as it prevents the entranceof air. By rotata means whereby the intermediates can be ing the upperbolt backward and the lower accurately and finely adjusted in adirection bolt forward theintermediate bucket-support parallel to thewheel-shaft without opening 5 can be moved upward in a direction paral-8o the inclosing casing, and this while the wheel lel to the axis of thewheel for the purpose of is revolving or stationary, as desired.adjusting the intermediate buckets with re- In the accompanyingdescription and spect to the wheelbuckets. If it be desired claimsappended thereto I have set forth with to lower the intermediatebuckets, the reverse particularity what I believe to be novel andoperation takes place. The wheel is provided 85 of my invention. with aweb 10, having a peripheral flange, to In the drawings which areattached to and which the wheel-buckets 11 are secured. The made a partof this application, Figure l particular means employed for securing theshows an embodiment of my invention, the wheel-buckets in place forms nopart of the said figure being a partial axial section of a presentinvention. It is sufficient that the 90 4o turbine. Fig. 2 is a partialplan view of a buckets be rigidly attached to the Wheel.

turbine on a somewhat smaller scale, and In Fig. 2 I have shown theintermediate Fig. 3 is a detail view showing the relation of buckets 6as being arranged in groups and the attaching means to thesight-openings. each group provided with a segmental sup- 1 representsthe wheel casing or shell, which port 5. The arc covered by theintermediates 95 is provided with a shoulder on which is seatwill varywith different kinds of machine.

ed the diaphragm 2. The diaphragm is pro- At each end of a segmentalbucket-support Vided with a nozzle 3, which maybe expandis provided'apair of adjusting blocks or ing or otherwise for imparting velocity tothe wedges 8, whereby the intermediates can be fluid stream anddischarging it against the adjusted as a whole in a direction paralleln: wheel-buckets. The casing is provided with with the wheel-axis or oneend can be raised a circumferential groove 4, which receives slightlywhile the other is depressed. This independence of adjustment isdesirable when the turbine is being assembled; but under ordinaryconditions of service both ends of the intermediate would be adjusted bya corresponding amount and in the same direction.

In order to determine the exact relation between the intermediates andthe buckets, I have provided small openings 12 in the casing, each ofwhich is provided with a removable cover or plug 13. These openings arepreferably situated opposite the line of division between adjacentsegmental bucket-supports, so that the position of two of the supportscan be observed through one opening. I have provided two openings foreach segmental support.

I have illustrated my improvement in adjusting devices applied to oneform of means for discharging fluid to a bucket-wheel; but obviously itis not limited to the particular form shown.

In accordance with the provisions of the patent statutes I havedescribed the principle of operation of my invention, together with theapparatus which I now consider to represent the best embodiment thereof;but I desire to have it understood that the apparatus shown is merelyillustrative and that the invention can be carried out by other means.

"What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. In an elastic-fluid turbine, the combination of a casing, abucket-wheel, intermediate buckets and their support, and deviceslocated within the casing and acting on opposite sides of the supportfor moving the intermediate buckets in a direction parallel to thewheel-axis.

2. In an elastic-fluid turbine, the combination of a casing, abucket-wheel mounted therein, intermediate buckets situated ,within thecasing and between rows of wheelbuckets, ad justin g-blocks locatedwithin the casing for moving the intermediate buckets in a directionparallel with the wheel-shaft, and means extending through the casingfor moving the blocks.

3. In an elastic-fluid turbine, the combination of a casing, abucket-wheel mounted therein, intermediate buckets situated within thecasing and between the rows of wheelbuckets, a pair of adjusting devicesengaging with opposite sides of the intermediates for adjusting them,and means for moving the said devices.

4. An elastic-fluid turbine comprising a casing, a wheel having rows ofbuckets, andintermediate buckets situated between the rows ofwheel-buckets, in combination with a support for the intermediatebuckets, and adj usting-blocks which engage therewith, the said supportand blocks having an inclined surface between them.

5. An elastic-fluid turbine comprising a casing, a wheel having rows ofbuckets, and segmental intermediate buckets located between the rows ofwheel-buckets, in combination with adjusting blocks arranged in pairs atopposite ends of each segmental intermediate.

6. An elastic-fluid turbine comprising a casing, a wheel having rows ofbuckets, segmental intermediate buckets located between the rows ofwheel-buckets, a support for the intermediates having beveled orinclined surfaces, adjusting-blocks arranged in pairs on opposite sidesof the support and located near the ends thereof, and means foradjusting the blocks from a point outside of the casing.

'7. An elastic-fluid turbine comprising a casing, a wheel having rows ofbuckets, segmental intermediate buckets located between the rows ofwheel-buckets, in combination with adjusting-blocks for moving theintermediate buckets in a direction parallel to the wheel-axis, and asight-opening formed in the casing having a detachable cover throughwhich the position of the intermediates can be observed.

.8. In an elastic-fluid turbine, the combination of a casing, abucket-wheel having rows of buckets, intermediate buckets arranged insegments, and a sight-opening located in the casing adjacent to the lineof division between the adjacent segmental intermediates.

9. In an elastic-fluid turbine, the combination of a bucket-wheel, acasing therefor having a groove, intermediate buckets, a support for thebuckets mounted in the groove, and adjusting-blocks which engage with awall of the groove and with the support.

10. In a turbine, the combination of acasing, a bucket-wheel mountedtherein, means for discharging fluid to the wheel-buckets located withinthe casing, and wedges for adjusting said means.

In witness whereof I have hereunto set my hand this 18th day of April,1903.

OLIVER D. H. BENTLEY.

Witnesses:

ALEX. F. MACDONALD, HELEN ORFORD.

